Is it permissible for me to shun my sister, who listens to music, for three days?

There is no harm in shunning a sister for three days, or more or less, if the reason for shunning her is her disobedience to Allah by listening to musical instruments. However, what is more appropriate is to do what serves the greater good. If shunning her deters her and stops her from the sin, then it is more appropriate. But if shunning her makes her persist further in the abomination, then what is more appropriate is to maintain ties with her and continuously advise her, reminding her of Allah and the sacredness of what she is doing.